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Re^2: Decoding .z and .gz files

by blackadder (Hermit)
on Mar 26, 2007 at 12:15 UTC ( [id://606565]=note: print w/replies, xml ) Need Help??


in reply to Re: Decoding .z and .gz files
in thread Decoding .z and .gz files

Hi

its a small "z" not a Capital "Z"

Still I Tried Compress::LZF as suggested however I got this error 
C:\Perl>perl z.pl -I c:/perl/bin
compressed data corrupted (size mismatch) at z.pl line 9, <$fh> chunk 
+1.

[download]
Thanks
Blackadder

Replies are listed 'Best First'.
Re^3: Decoding .z and .gz files
by jettero (Monsignor) on Mar 26, 2007 at 12:34 UTC

    Nevertheless, I suspect it's supposed to be a capital Z. I don't suppose you could paste in a hex dump of the first 256 characters or so... It may reveal that the compression isn't ".z" or ".Z" at all.

    UPDATE: Wow, just wow. A hex dump would look more like this: 

    0000000: 4120 6865 7820 6475 6d70 2077 6f75 6c64  A hex dump would
0000010: 206c 6f6f 6b20 6d6f 7265 206c 696b 6520   look more like 
0000020: 7468 6973 3a0a                           this:.

    [download]

    Of course, your tools may differ from xxd.

    -Paul

[reply]
[d/l]
      Hi Paul

      How do you mean " hex dump of the first 256 characters"! Where from? do you mean the output from running the Copmress::LZF based script? Well this returned 
      compressed data corrupted (size mismatch) at z.pl line 5.

      [download]
      And the output from running Archice::Zip or Compress::Zlib returned an output similar to what you get if you open a bin file using a text editer (lots of goobldi gook on the screen including lots beeps)! do you still want me to post this output? aNYWAY HERE IS THE OUTPUT 
      CH3viƍ9bҰ(K0bSy2ɓ(S\ɲ˂6h P ͚0n
+F
6jhy3
4ntɴӧP3N97yCG*S\$CF
g]˶۷pI`…
FŌ;~,f9aĸF.w3w3
7ex6gװRu Xqo.X,NN| 4∔ B@$!R    $F
+    rN<҄{ @ oO<F
C\Mc&0su!Frނ2
1m pNQ
6NXata `n!`eQFBn
%VEPx`2:B
A1$ED Ar116.T#d et 8cParI9FM6B9D
+HS7đfqFr4tFr `dp$
Ul
oAW    q&6Ѣnq3pE
<چ=FCn    BaFx1ƴqԑF-vaG,1Ʃb,fY9a-v
+% YFfl    MAF+e¡^H‹炀y[nP)©**
+ƴj-*x|ô hG:jK)F:)bGLqy    (fht-
+/A~sp
n\
b_U/=^ p]5um6f=xw#6.xW?>vy'N\
+dP虏^z:›܄.ˡ:alfnpu"i?;›1F/
+ϼwF[o;.aͷX~-L_q'ЯpC=|C5
+m{ܐ10p| /pjW
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+6xyˬc:h:2T$氮4|hP)N`f8`Tj_ LtMX@m
+sth;uy*6_XTB$"AG    
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+PHwh**%#@ NBjZvpjM/duy`mUSa
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+~U,[Py-k6(,d=mWɰK l`i!RHvւ@*b*r*
+ɶ%ڂ5 W[7L7Y[ukZ&]-h*6W
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+g6ZXUHR4&5Pa-v71*,7I+]ubX]\M2(&"nh#(k
+BpNHI[C6ХNqK1aJVO&>w

0$2a.ͶE:P($"B"<qyFhbVoaU1S@`3l#
+24{jšvYaA47St@R'\ٞLbtǞ
炴i)RGXTVk
Ye>.:2›Uhf>v%F‹o|޿?,7Ґ  $Lqf5V4
+w)yg}Bw6~CD_' y8xRr~u2#sxxw33'y
+0_wX5Sz!V 2 D||24MfNRaaEy1R9dLSxO2\Y
+[u]hYEX)ח\zK͇S:}-T[,ice3^aCwk0-,|R$=v3y
+삈-҇ӈ XvVP5{XO8YxPzO~h@"1
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+s‹ ‹8=V‹djc_hGsPc4p8dϥ0
+8
Iu-Y‹    y‹B1" &x]"Z&*Y5o-=Wx%xW1x
y58y8XA'e)%2)#W p2
$ 1M54@y 'zix쒕5rHNKGHV T0%sfGg%
'Ƀ;E4EQ(ti낗zNt9u<ɑJd7sYwR7RH>s9s
+DRh  fw/rHiQ{RWtGe6››]›IB4ǜr&љ
+›\G?bz%ٝiJRi_Fj&l)<2ϷSG[@%G2>%1
+]_xq‹=y1٠ؑԨC#W.#ԡ
 4WlE(W
9

      [download]
      Blackadder
[reply]
[d/l]
[select]

        There's the little unix utility file, which you can ask to make an 'educated' guess, if you're unsure what format a particular file is. Running it on the binary data you posted (which I saved as the file 606574), it says : 

        $ file 606574
606574: compress'd data 16 bits

        [download]

        So, as Burak noted, you'd have to use an external program like gzip (or gunzip, etc.) which does handle "compress'd" (i.e. .Z) files. Trying to uncompress the file gives 

        $ gzip -dc 606574                     
CC0000000000_gvap-infsbil002_1501071006/SunOS0000644000000000000000000
+0000000105507
gzip: 606574: corrupt input.

        [download]

        which looks very much like the beginning of a tar file... (the 'corrupt input' is to be expected, and can be ignored here)

[reply]
[d/l]
[select]

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